• Journal of Applied Biological Chemistry
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• 제62권4호
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• pp.433-439
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• 2019

Artemisia species are widely used as food ingredients and raw material in traditional medicine. However, to date, the secondary metabolites of Artemisia gmelinii Weber ex Stechm. have not been sufficiently investigated. The secondary metabolites of A. gmelinii, which was collected from representative regions in Chungbuk, Gangwon, and Gyeongbuk, were analyzed using ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTof MS) combined with an unsupervised principal component analysis (PCA) multivariate analysis. In the loading scatter plot of PCA, significant changes in metabolites were observed between the regions, ten metabolites (3: 5-O-caffeoylquinic acid, 4: 4-O-caffeoylquinic acid, 8: trans-melilotoside, 12: quercetin 3-O-hexoside, 15: 3,4-O-dicaffeoylquinic acid, 17: 3,5-O-dicaffeoylquinic acid, 18: 4,5-O-dicaffeoylquinic acid, 19: syringaldehyde, 20: caffeoylquinic acid derivative, and 23: icariside II) were evaluated as key markers among twenty-five identified metabolites. Interestingly, the contents of the identified marker significantly differed between the three groups. This is the first study to report the presence of marker metabolites and their correlating geographical cultivation in A. gmelinii.

• 패션비즈니스
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• 제2권4호
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• pp.102-111
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• 1998

The purpose of this study is to present the basic material for the competitive, high-quality products by analyzing employees' attitude toward their job and some factors which influence the enhancement of productivity, education of workers, and facilities. This project was mainly conducted the conditions of women's wear manufacturing industries in Taegu by interviewing 143 employees in the sewing department. The result of this dissertation can be summarized as follows; 1. When it comes to the division of task in the sewing department, one team is composed of chairpersons (33.5%), assistant members (27.4%) and sub-assistant members (26.6%). The inspection of commodities as well as the enhancement of work on ironing for elaboration was divided as completion (12.6%) and finally the forms of task were made up of design sampling team (49%) and contracting team (51%). 2. Among the needle workers, as many as 60% employees had received technical education, which was by means of being passed down from the predecessors (81.6%). In terms of the period of education, from 2 to 5 years topped the list. The contents of education comprise patterning, sewing (65.2%) and ironing (20.3%). 3. The department of design takes charge of the report on working directions up to 88.2% and the working directions were used by 69.9 % of technicians. The directors of working conditions and methods were chiefs of designing department (37.7%) and those of sewing department (30.8%). The factors of defective goods were low-quality materials (50.0%), the deficiency in skills of workers. In terms of methods for preventing defects, technical education of workers, standardization of task and investment for factory automation were suggested. 4. As for their perception of present work, most of employees (80%) look upon it as a way of earning a living and 11% of them wanted to derive many things from their work. 59.2% of workers were satisfied with the product. When it comes to the incentive system provided by company, 67.0% responsed that it was not bad, and 23.9% evaluated it as 'satisfactory'.

• 한국의류학회지
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• 제33권1호
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• pp.45-54
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• 2009

The reform of dress regulation in Kapshin(甲申衣制改革; 1884) was the first dress renovation in 8 years after Chosun's port opening in 1876, and the key contents of that reform was the simplification of the formal dress and private dress. The reform in the culture of the traditional costume should require some kind of special experience because that culture had been regarded as the precious symbol of the Confucianism. The purpose of this study is to investigate the background of "the reform" and who proposed "that reform", by contemplating the costume and the thought of costume of the ambassador extraordinary(修信使) and the Inspectors detached to Japan(朝士視察團) who experienced new costume system of Japan sent by Chosun Dynasty. For this study, historical documents such as 'Sillok(實錄)', a sort of report("修信使記錄", "聞見事件") were reviewed and the evidential photos in Japan were analyzed. It can be summarized as follows. First, Kim Kisu(金綺秀, Susinsa) in 1876 and Kim Hongjip(金弘集, Susinsa) in 1880 wore the traditional costume of Chosun in Japan, and described the westernized Japanese costume in view of traditional costume culture. Second, the inspectors detached to Japan in 1881 showed the same attitude to the Japanese costume as the previous Susinsas had done. Third, Park Younghyo(朴泳孝), who was an ambassador extraordinary and plenipotentiary(特命全權大使) in 1882, experienced western style in Japan and played an positive diplomatic activities with western nations. It could be guessed that those changes in the attitudes of the diplomats might have the relationship with the change of Chosun, which began a treaty of amity between western nations after 1882. Afterwards, Chosun seems to have decided to reform the system of traditional costume into the simplified one in 1884, proposed by the diplomats who experienced foreign culture abroad including Park Younghyo(朴泳孝) and the mutual agreement in Chosun Government.

• 방송공학회논문지
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• 제10권2호
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• pp.190-201
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• 2005

본 논문에서는 유${\cdot}$무선망의 결합, 방송${\cdot}$통신망의 융합 등의 환경에서 디지털 아이템의 생성, 분배, 소비 등과 관련된 MPEG-21 이벤트 리포팅 서비스를 제공하기 위한 시스템을 구현한다. MPEG-21 이벤트 리포팅은 MPEG-21 멀티미디어 프레임워크에서 피어와 사용자 간에 발생하는 이벤트에 대한 정보를 공유하기 위한 표준 통신 수단이다. 본 논문에서는 방송${\cdot}$통신 융합망에서 MPEG-21 이벤트 리포팅 서비스를 구현하기 위하여 IS0/1EC 21000-Part 15 규격을 준수하는 메시지 구조 및 시스템 구조를 설계하고, 이를 바탕으로 REL, IPMP, DIME 등 MPEG-21의 다른 요소 엔진과 연동 가능한 이벤트 리포팅 시스템을 구현한다.

• 융합보안논문지
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• 제17권1호
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• pp.45-52
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• 2017

2015년 12월부터 미국에서 시행된 사이버안보 정보공유법(Cybersecurity Information Sharing Act of 2015)은 미국의 사이버안보 입법 활동이 맺은 가장 큰 결실 중 하나이다. 정보공유의 활성화는 한국의 사이버안보 추진체계 개선과제 중 하나로서 향후 한국의 사이버안보 법제도 개선에서 중요하게 다루어야 할 사항이며, 사이버안보법 정보공유법의 연구로부터 많은 시사점을 도출할 수 있다. 그럼에도 불구하고 사이버안보 정보공유법의 내용을 구체적으로 다루면서 그 규범적 의미를 확인하는 국내의 선행연구를 찾기 어렵다. 따라서 용어 정의, 정보공유 절차 수립 및 여건 마련, 민간의 자발적 정보공유 촉진, 행정부에 대한 견제 및 의회 보고, 기타 사항이라는 다섯 가지 범주별로 사이버안보 정보공유법의 내용을 확인하고 규범적 의미와 시사점을 모색하고자 하였다. 사이버안보 정보공유법은 자율성에 기초한 정보공유를 활성화하는 동시에 정보공유 과정에서 초래될 수 있는 부작용을 제거하는 장치를 마련하고 있다. 향후 한국의 사이버안보 법제도 정비에서 사이버안보 정보공유법의 규범적 의미와 시사점을 적절히 활용하는 것이 필요하다.

• 한국컴퓨터정보학회논문지
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• 제13권6호
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• pp.287-294
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• 2008

성폭력에 대한 많은 선행연구에서 보여주듯 낯선사람으로부터 당하는 일반강간 보다는 대부분의 강간이 오히려 지인(知人)인 경우가 더 많다. 특히 지인강간 중에서도 데이트상대에 의해서 일어난다는 사실을 생각할 때 가장 보편화된 성폭력인 데이트 강간에 대한 체계적이고 학문적인 연구의 필요성을 느끼지 않을 수 없다. 최근에 국내에서 실시된 데이트 강간에 대한 연구에서도 문제의 심각성을 여실히 드러내고 있다. 조사에서 보면 20.5%의 여성들이 데이트 강간 피해경험을 보고하였다. 그러나 일반적인 강간 피해자들보다 데이트 강간 피해자들이 관련기관에 피해사실을 신고하는 경우는 훨씬 드물다. 그 이유는 데이트강간의 경우 피해자 혹은 가해자 자신들도 피해나 가해사실을 조금은 과격한 성관계나 성접촉을 가진 것으로 생각할 뿐 성폭력으로 인식하지 않기 때문이다. 따라서 본 연구는 Michael Shively, Perceived Risks of Date Rape, Judith M.Sgarzi, Victimology 을 바탕으로 데이트강간의 선행연구결과들을 소개코자 한다.

• 대한화장품학회지
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• 제22권2호
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• pp.41-51
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• 1996

Phaseolus aureus (mung bean), Leguminosae, has been used as an antidote from the ancient time. Especially, it has been widely used for cleaning face and skin in oriental countries. Although several constituents such as fatty acids, phytoallexin and phaseol derivatives were reported in P. aureus and related species including seedlings, there has been a few report to describe its biological activity. Therefore, in this investigation, the ethanol extract from P. aureus was obtained and its biological activities including the antioxidative and anti-inflammatory activities were studied. The 70% ethanol extract from P. aureus showed dose-dependent antioxidative activity (52.3% inhibition at 4 mg/ml) against lipid peroxidation assay, while the extract did not show the inhibitory activity of superoxide radical formation. The extract also showed the topical anti-inflammatory activity against croton-oil and arachidonic acid induced mouse ear edema test (18-19% inhibition at 7.5 mg/ear) as well as mild inhibitory activity against picryl chloride induced delayed hypersensitivity in mouse. For investigating active principles, vitexin and isovitexin (apigenin C-glycoside) as flavonoids, and adenosine were isolated from the extract using silica gel chromatography. The actual contents of vitexin and isovitexin were found to be 3.7 and 2.4 mg/g extract, respectively. Vitexin and isovitexin showed the antioxidative activity. They showed the topical anti-inflammatory activity, although the activities were not potent compared to the reference compounds. These results suggested that vitexin and isovitexin may be, at least in part, the compounds contributing the antioxidative activity in vitro and the topical anti-inflammatory activity of P. aureus in vivo. All results of present study might be one of the scientific rationale in using mung bean for skin care from the ancient time.

• 한국재료학회지
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• 제22권11호
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• pp.609-614
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• 2012

We report on the NO gas sensing properties of non-directional ZnO nanofibers synthesized using a typical electrospinning technique. These non-directional ZnO nanofibers were electrospun on an $SiO_2$/Si substrate from a solution containing poly vinyl alcohol (PVA) and zinc nitrate hexahydrate dissolved in distilled water. Calcination processing of the ZnO/PVA composite nanofibers resulted in a random network of polycrystalline ZnO nanofibers of 50 nm to 100 nm in diameter. The diameter of the nanofibers was found to depend primarily on the solution viscosity; a proper viscosity was maintained by adding PVA to fabricate uniform ZnO nanofibers. Microstructural measurements using scanning electron microscopy revealed that our synthesized ZnO nanofibers after calcination had coarser surface morphology than those before calcination, indicating that the calcination processing was sufficient to remove organic contents. From the gas sensing response measurements for various NO gas concentrations in dry air at several working temperatures, it was found that gas sensors based on electrospun ZnO nanofibers showed quite good responses, exhibiting a maximum sensitivity to NO gas in dry air at an operating temperature of $200^{\circ}C$. In particular, the non-directional electrospun ZnO nanofiber gas sensors were found to have a good NO gas detection limit of sub-ppm levels in dry air. These results illustrate that non-directional electrospun ZnO nanofibers are promising for use in low-cost, high-performance practical NO gas sensors.

• 대한수의학회지
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• 제45권3호
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• pp.445-450
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• 2005

A 1.35 kg, three-year-old, female, Yorkshire terrier was referred to the veterinary medical teaching hospital of Chungnam National University with an alopecia, scale, polydipsia and polyuria. During hospitalization, the patient revealed swelling and pain of all four foot pads. The hematology indicated nonregenerative anemia. Blood serum chemistry revealed elevation of BUN, serum creatinine and phosphorus contents. Radiographs of feet revealed increased radiodensity in the soft tissue of the foot pad. In ultrasonographs of abdomen, kidneys showed diffusely echodense renal cortex with loss of the normal corticomedullary boundary. Fine needle aspiration of the swollen pad cysts contained a amorphous basophillic chalky, white and pasty material. The culture result was negative for bacteria. In conclusion, it was diagnosed as metastatic calcinosis circumscripta secondary to chronic renal failure. An oral charcoal absorbent and aluminum hydroxide were used to treat this condition. After six weeks treatment, hyperphosphatemia was corrected and metastatic calcinosis circumscriptawas not presented any more.

• KEPCO Journal on Electric Power and Energy
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• 제2권2호
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• pp.187-192
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• 2016

이산화탄소의 화학적 전환기술은 온실가스 저감뿐만 아니라 탄소자원화를 통해 유한한 자원을 대체할 수 있는 기술이다. 다양한 화학반응에 의한 이산화탄소의 전환이 상용화되어 있지만, 대량의 이산화탄소를 자원화하기 위해서는 혁신적인 기술개발이 필요하며 전세계적으로 이에 대한 연구가 활발히 진행되고 있다. 이산화탄소를 직접 분자구조내에 삽입하는 기술 중 고분자 원료물질로 이용되고 있는 Dimethyl carbonate와 Polyol에 대한 제조기술 현황에 대해 소개하였다. RIST에서는 Dimethyl carbonate 제조기술로 urea methanolysis에 의한 촉매 및 공정을 개발하였으며, Polyol의 경우 고유 촉매개발 및 polyol 제품군에 대한 연구를 수행중에 있다. 이들은 분자내에 이산화탄소를 40%이상 포함할 수 있는 화학제품이므로 실용화 성공 시 온실가스 저감에 큰 기여를 할 수 있을 것으로 기대된다.